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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Mar. 31, 2014
Estimate of Fair Value, Fair Value Disclosure [Member]
   
Assets, Fair Value Disclosure [Abstract]    
Deferred compensation plan assets $ 15,614 $ 16,387
Liabilities, Fair Value Disclosure [Abstract]    
Deferred compensation plan liabilities 15,614 16,387
Contingent consideration liabilities   323
Total liabilities measured at fair value on a recurring basis   16,710
Quoted Prices In Active Markets Level 1 [Member]
   
Assets, Fair Value Disclosure [Abstract]    
Deferred compensation plan assets 15,614 16,387
Liabilities, Fair Value Disclosure [Abstract]    
Deferred compensation plan liabilities 15,614 16,387
Contingent consideration liabilities   0
Total liabilities measured at fair value on a recurring basis   16,387
Significant Other Observable Inputs Level 2 [Member]
   
Assets, Fair Value Disclosure [Abstract]    
Deferred compensation plan assets 0 0
Liabilities, Fair Value Disclosure [Abstract]    
Deferred compensation plan liabilities 0 0
Contingent consideration liabilities   0
Total liabilities measured at fair value on a recurring basis   0
Significant Unobservable Inputs Level 3 [Member]
   
Assets, Fair Value Disclosure [Abstract]    
Deferred compensation plan assets 0 0
Liabilities, Fair Value Disclosure [Abstract]    
Deferred compensation plan liabilities 0 0
Contingent consideration liabilities   323
Total liabilities measured at fair value on a recurring basis   $ 323